Grimmspeed Intake Manifold to TGV Gasket(Pair) 02-07 WRX, 04-21 STI, 04-08 FXT - 023001 335 Series meaning the fuel pressure regulator

meaning the fuel pressure regulator is inside of the fuel tank and has only one line leading to the engine

Absolute (PSIa) Brass Pressure Sensors

BM9-XTG4 kit features an Xtreme pressure plate for the most demanding driver

the OE merge collectors are made specifically with ease of manufacturing in mind and the result is a compromise on performance

Grimmspeed Intake Manifold to TGV Gasket(Pair) 02-07 WRX, 04-21 STI, 04-08 FXT - 023001 335 Series meaning the fuel pressure regulatorGrimmSpeed does it again with our enlarged bore Intake Manifold To TGV Gaskets. Why do you want the enlarged bore style vs. the small oem? the oem gasket hole diameter is much smaller than the TGV itself so you are very limited on matching up the ports of the outlet of the Intake manifold going into the inlet of the TGV during porting. With our enlarged port gasket we are able to match the IM and TGV up perfectly which greatly improves air flow